Bug 22065

Summary:	consideration: MAX_ETH_CARDS upped?
Product:	[Retired] Red Hat Linux	Reporter:	Pekka Savola <pekkas>
Component:	kernel	Assignee:	Arjan van de Ven <arjanv>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Brock Organ <borgan>
Severity:	medium	Docs Contact:
Priority:	low
Version:	6.2	CC:	dr
Target Milestone:	---	Keywords:	FutureFeature
Target Release:	---
Hardware:	i386
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Enhancement
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-09-30 15:38:52 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Pekka Savola 2000-12-11 16:40:37 UTC

This only affects 2.2.x kernels.

By default, you cannot have more than 16 eth interfaces.  Using quad port cards, this
_does_ now and then become used up.

The limit is defined in drivers/net/net_init.c.

99.9% or so never need this, but for the record...  Anyway, I don't see _any harm_ in raising that to,
say, 32 if an updated kernel packages were to be issued.

Comment 1 Daniel Roesen 2000-12-11 18:42:14 UTC

Hm, this could be a pitfall for people installing Red Hat with the RH kernel and
after enrolling their own kernel for some reasons get a kernel bailing out. This
modification would have to be documented somewhere obvious (perhaps in the
kernel dmesg output in boot phase).

Comment 2 Pekka Savola 2000-12-11 18:58:59 UTC

People who roll their own kernels and own a system with >16 interfaces shouldn't
be surprised by things like these.. And there are a lot of patches (e.g. soft-raid) which would
get you into trouble if you didn't know what you're doing.  Taking too much care of
these would be an endless circle.

Comment 3 Daniel Roesen 2000-12-11 21:34:34 UTC

Nod, you're absolutely right. Take my comment void. I vote for pumping up this
value too.

Comment 4 Bugzilla owner 2004-09-30 15:38:52 UTC

Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem
persists.

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/